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3 years ago

2CO + O2 → 2002

Chemistry

1 answer:

Reika [66]3 years ago

5 0

Answer:

B: Increasing the volume inside the reaction chamber

Explanation:

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What three countries are considered the ‘big three’ when it comes to space programs and are the only countries to successfully l

Colt1911 [192]

Answer:

C. United States, Russia, and China

Explanation:

Only three nations (Russia, U.S., China) have launched their own crewed spacecraft, with the Soviets/Russians and the American programs providing rides to other nations' astronauts. Twenty-seven "first flights" occurred on Soviet or Russian flights while the United States carried fourteen.

8 0

2 years ago

A neutral atom possesses an number of 13 and an atomic mass of 27.three electrons are lost.from what region of the atom are they

Pavlova-9 [17]

They are lost from valence shell (it's outermost shell of an atom).

->>> outside the atom

3 0

4 years ago

You are given 25.00 mL of an acetic acid solution of unknown concentration. You find it requires 35.75 mL of a 0.2750 M NaOH sol

oksano4ka [1.4K]

Answer:

a. 0.393M CH₃COOH.

b. 2.360% of acetic acid in the solution

Explanation:

The reaction of acetic acid (CH₃COOH) with NaOH is:

CH₃COOH + NaOH → CH₃COO⁻ + H₂O + Na⁺

<em>That means 1 mole of acid reacts per mole of NaOH.</em>

Moles of NaOH to reach the equivalence point are:

35.75mL = 0.03575L × (0.2750mol / L) = <em>9.831x10⁻³ moles of NaOH</em>

As 1 mole of acid reacts per mole of NaOH, moles of CH₃COOH in the acid solution are 9.831x10⁻³ moles.

a. As the volume of the acetic acid solution is 25.00mL = 0.02500L, the molarity of the solution is:

9.831x10⁻³ moles / 0.02500L =

b. Molar mass of acetic acid is 60g/mol. The mass of 9.831x10⁻³ moles is:

9.831x10⁻³ moles ₓ (60g / mol) = <em>0.590g of CH₃COOH</em>.

As volume of the solution is 25.00mL, the percentage of acetic acid is:

(0.590g CH₃COOH / 25.00mL) ₓ 100 =

<h3>2.360% of acetic acid in the solution</h3>

8 0

3 years ago

A student wonders whether a piece of jewelry is made of pure silver. She determines that its mass is 3.25 g. Then she drops it i

Anettt [7]

Answer:

The jewelry is 2896.54_Kg/m^3 less dense than pure silver

Explanation:

Density of jewellery = (mass of jewellery) ÷ (volume of jewellery)

=3.25g ÷ 0.428mL = 0.00325Kg÷0.000000428m^3 = 7583.46Kg/m^3

The density of silver is 10490_Kg/m^3 which is (10490 - 7583.46) 2896.54_Kg/m^3 more dense than the jewellery

The density of Silver [Ag]

The weight of Silver per cubic centimeter is 10.49 grams or the weight of silver per cubic meter is 10490 kilograms, that is the density of silver is 10490 kg/m³; at 20°C (68°F or 293.15K) at a pressure of one atmospheres.

3 0

3 years ago

What is the volume, to the nearest whole cubic inch, of a cylinder with a height of 10 inches and a radius of 8 inches? Use Pi =

omeli [17]

Answer:

v=2010 inches^3

Explanation:

The volume of a cylinder can be found using:

$v=\pi r^2h$

We know the height is 10, the radius is 8, and we can substitute 3.14 in for pi

v=3.14(8^2)(10)

Solve the exponent first

v=3.14(64)(10)

v=3.14(640)

v=2009.6

To the nearest whole number:

v=2010 inches^3

4 0

3 years ago

Read 2 more answers